Benzyl chloride. Benzyl chloride, or Î±-chlorotoluene, is an organic compound with the formula C6H5CH2Cl. This colourless liquid is a reactive organochlorine compound that is a widely used chemical building block.
Two slits are illuminated with red light (Î» = 650 nm). The slits are 0.25 mm apart and the distance to the screen is 1.25 m. What fraction of the maximum intensity on the screen is the intensity measured at a distance 3.0 mm from the central.
Throw distance x width of screen in inches = distance from screen to projector lens. Throw distance is the distance from the screen to the projector. For example, if your screen is 87â wide and the throw distance of your projector is 1.3, the projector should be 113â (87x1.3=113â) from the screen. Remember to measure from the center of the projectorâs lens straight to the screen, like the above image shows. For most people, your projector will list a throw distance, or throw ratio in this case, of something like 1.5-2.25. The wider the throw ratio, the more wiggle room you have in placing your projector.